The report, which measures mobile market share for the U.S. during a three month period ending November 2011, provides an average among over 30,000 U.S. mobile subscribers.

According to comScore, 234 million Americans age 13 and over used mobile devices in the three month period, and 91.4 million of them are smartphone owners. Android-based devices took the lead position with 46.9 percent share in the smartphone market. Apple took second place with 28.7 percent, followed by RIM (16.6 percent), Microsoft (5.2 percent) and Symbian (1.5 percent).

Samsung, which creates mobile Android-based devices, was the handset leader during the three month timeframe with 25.6 percent market share. This was a 0.3 increase from the previous three month period ending August 2011. LG followed with 20.5 percent, Motorola had 13.7 percent, Apple had 11.2 percent and RIM fell in last place with 6.5 percent.

The results hardly seem surprising, since a report from earlier this month stated that Android claims nearly half of the U.S. smartphone market. Also, Android dominated comScore's report ending August 2011 with 43.8 percent market share, leaving Apple in second place with 27.3 percent.

Another unsurprising factor about comScore's report is that RIM has lost market share since the three month period ending August 2011, sliding from 19.7 percent to 16.6 percent in top smartphone platforms and also falling from 7.1 percent to 6.5 percent top mobile OEMs. More than likely, its tumble is due to RIM's October data outage that lasted four days and spanned the U.S., Canada, Europe, South America, Asia, Africa and the Middle East.